package com.shen.springcloud.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.Date;


/**
 * @program: SpringCloud
 * @description:
 * @author: Mr.shen
 * @create: 2020-07-27 17:24
 **/
@Component
@Order(0)
@Slf4j
public class MyLogGateWayFilter implements GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("************come  in MyLogGateWayFilter" + new Date());
        String uname = exchange.getRequest().getQueryParams().getFirst("uname");
        if(uname == null){
            log.info("********用户名胃null，非法用户 /(ㄒoㄒ)/~~");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }

    /**
     * @Override
     *     public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
     *
     *         log.info("*********come in MyLogGateWayFilter: "+new Date());
     *         String uName = exchange.getRequest().getQueryParams().getFirst("username");
     *         if(StringUtils.isEmpty(uName)){
     *             log.info("*****用户名为Null 非法用户,(┬＿┬)");
     *             //给人家一个回应
     *             exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
     *             return exchange.getResponse().setComplete();
     *         }
     *         return chain.filter(exchange);
     *     }
     */
}
